孔子说：“管理国家要以身做则。如同北极星，安然不动而众星绕之。”

The heart of the educator must be a living flame, a source of warmth and light.

I don't know if Mama was right or if it...it's Lieutenant Dan. I don't know... if we each have a... destiny... or if we're all just floating around accidental-like on a breeze... but I...I think... maybe it's both. Maybe both get happening at the same time.

The best way to learn econometrics is by doing—working with real data and real problems.

我把每一分都当作赛点来打。

人心在任何年龄都只会向同样敞开的心敞开。